The anniversary of the Constitutional law approval in which Tehran was legally recognized as the official capital of Iran for the first time.
Origin
Supplementary Fundamental Laws (Oct 1907)
Fun Facts
Tehran was chosen as capital by Agha Mohammad Khan Qajar, but it was the Constitutional Revolution that legally cemented its status as the capital of all of Iran.
Related Events
Nowruz
Nowruz, the world's oldest celebration, marks the Persian New Year and the spring equinox. This festival symbolizes the triumph of light over darkness, warmth over cold, and life over death. Celebrated continuously for over 3,000 years since the Achaemenid era, Nowruz is observed by more than 300 million people worldwide across Iran, Central Asia, the Caucasus, and diaspora communities. Its rituals—including Haft-Seen (and its predecessor Haft-Shin), Chaharshanbe Suri, Sizdah Bedar, spring cleaning, and family visits—all symbolize renewal of nature and the human spirit.
Nowruz-e Bozorg (Great Nowruz)
The Great Nowruz (Khordad Sal) falls on the 6th of Farvardin (Khordad day). In Zoroastrian tradition, this is the birthday of Zoroaster and the spiritual peak of Nowruz. Sassanid kings held public audiences on this day.
Sizdah Bedar
Nature Day marking the end of Nowruz holidays. Families picnic outdoors, tie sabzeh (greens), and enjoy communal games.
Rapithwin Festival
Rapithwin festival on the 3rd of Farvardin celebrates the return of warmth and light after winter. Rapithwin is the Yazata of noon and summer warmth who retreats underground during winter and returns with spring.